1//===-- sanitizer_syscall_generic.inc ---------------------------*- C++ -*-===//
2//
3// This file is distributed under the University of Illinois Open Source
4// License. See LICENSE.TXT for details.
5//
6//===----------------------------------------------------------------------===//
7//
8// Generic implementations of internal_syscall* and internal_iserror.
9//
10//===----------------------------------------------------------------------===//
11
12#if SANITIZER_FREEBSD || SANITIZER_MAC || SANITIZER_NETBSD
13# define SYSCALL(name) SYS_ ## name
14#else
15# define SYSCALL(name) __NR_ ## name
16#endif
17
18#if SANITIZER_NETBSD
19// We use 3 kinds of internal_syscall's for different types of retval in order
20// to address differences in calling conventions (e.g. registers to place the
21// return value in).
22//   - internal_syscall     for 32-bit length (int, pid_t)
23//   - internal_syscall64   for 64-bit length (off_t)
24//   - internal_syscall_ptr for pointer and (s)size_t
25# define  internal_syscall      syscall
26# define  internal_syscall64    __syscall
27// Handle syscall renames manually
28# define SYS_stat SYS___stat50
29# define SYS_lstat SYS___lstat50
30# define SYS_fstat SYS___fstat50
31# define SYS_gettimeofday SYS___gettimeofday50
32# define SYS_wait4 SYS___wait450
33# define SYS_getdents SYS___getdents30
34# define SYS_sigaltstack SYS___sigaltstack14
35# define SYS_sigprocmask SYS___sigprocmask14
36# define SYS_nanosleep SYS___nanosleep50
37# if SANITIZER_WORDSIZE == 64
38#  define internal_syscall_ptr  __syscall
39# else
40#  define internal_syscall_ptr  syscall
41# endif
42#elif defined(__x86_64__) && (SANITIZER_FREEBSD || SANITIZER_MAC)
43# define internal_syscall __syscall
44# else
45# define internal_syscall syscall
46#endif
47
48bool internal_iserror(uptr retval, int *rverrno) {
49  if (retval == (uptr)-1) {
50    if (rverrno)
51      *rverrno = errno;
52    return true;
53  } else {
54    return false;
55  }
56}
57